• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to the technical field of bridge structures, and provides a box beam with grid cores. Said box beam comprises an apron, a floor, a first core and a second core arranged in opposite manner, the first core comprising a first upper beam embedded in the deck, a first lower beam embedded in the floor and a plurality of first spacers arranged spaced apart between the first upper beam and the first lower beam; the second core comprises a second upper beam embedded in the deck, a second lower beam encased in the floor and second spacers corresponding one by one to the first spacers, the two ends of each second retaining bar being respectively connected to the second upper beam and the second lower beam.
    公开号:BE1025239B1
    申请号:E2018/5100
    申请日:2018-02-18
    公开日:2018-12-18
    发明作者:Feng Zhang；Xiaoyan Liu；Chunjin Lin；Weimin Yang；Xiangfeng Xu；Zhenhao Xu；Shaoshuai Shi；Jiaqi Liu
    申请人:Shandong University；Changsha University Of Science & Technology；Shandong Jiaotong University；
    IPC主号:
    专利说明:

    Technical area
    The present invention relates to the technical field of bridge structures and in particular a box girder with grid souls.
    State of the art
    The corrugated steel composite box girders are a new type of box girder which appeared in the twentieth century in the 80s, it is a new type of composite steel-concrete structure whose corrugated steel plates replaced the cores in concrete.
    However, the parts combining corrugated steel cores with the deck and the floor being numerous and complex, the concrete poured on site in these parts is not compact enough; moreover, owing to the fact that the interior of the box of the corrugated steel composite box girders are closed spaces, the resistance performance of the box to the wind is quite bad and the thermal stresses significant.
    Content of the invention
    The present invention must solve the technical problem of poor wind resistance and significant thermal stresses of composite box girders with corrugated steel webs as well as poor concrete pouring in the parts combining webs with deck and floor in current techniques.
    In order to solve the aforementioned problems, the present invention provides a box beam with grid souls, said box beam comprising an apron, a floor, a first core and a second soul arranged in opposite directions, said first core comprising a first upper beam embedded in said deck, a first lower beam embedded in said floor and a plurality of first struts spaced apart between said first upper beam and said first lower beam, the two ends of said first struts being respectively connected to said first beam upper and said first lower beam; said second core comprising a second upper beam embedded in said deck, a second
    BE2018 / 5100 lower beam embedded in said floor and second struts corresponding one to one to said first struts, the two ends of said second struts being respectively connected to said second upper beam and said second lower beam.
    In which said first upper beam, first lower beam, second upper beam and second lower beam are all I-sections.
    In which, said first struts and said second struts are all T-shaped steel plates.
    In which, it further comprises prestressing elements, a transverse prestressed beam and a pressure bar, said pressure bar is arranged above the middle part of said transverse prestressed beam, said transverse prestressed beam comprises a plurality of prestressed beams arranged above said floor, the two ends of each prestressed beam are connected respectively to said first spacers and said second corresponding spacers, said pressure bar and said prestressed beams being orthogonal, said prestressing elements serving to arrange said bar pressure by pressure on said prestressed beams.
    In which said pressure bar is made of steel and double hollow.
    In which, the quantity of said prestressing elements is a plurality, a plurality of said prestressing elements are arranged lengthwise along said pressure bar.
    In which said prestressing elements include threaded steel bars and nuts, one end of said threaded steel bars is embedded in said floor, the other end passes through said pressure bar and is connected to said nuts.
    In which, said prestressed beams pass through angles and are connected to said first struts and said second struts.
    The present invention is of simple structure, easy and practical to implement, the use of the plurality of first spacers as the main body of the first core and the use of the plurality of second spacers as the main body of the second soul, allows not only to reduce the weight of the box girder, but considerably increases the stretching effects of transverse prestressing of the deck and the floor,
    BE2018 / 5100 increasing wind resistance performance and reducing thermal stresses.
    Description of the annexed drawings
    Drawing 1 shows an axial side view of the box girder with grid cores of the embodiment of the present invention;
    Drawing 2 shows a front view of the box girder with grid cores of the embodiment of the present invention;
    Drawing 3 shows a partial enlarged view of Drawing 1 in direction A;
    Drawing 4 shows an axial side view of the first core (second core) of the box beam with grid souls of the embodiment of the present invention;
    Drawing 5 shows the partial diagram of the transverse prestressed beam in the box beam provided with grid cores of the embodiment of the present invention;
    Drawing 6 represents the deformation diagrams of the floor of the box girder with grid cores of the embodiment of the present invention when the prestressing elements are used and when they are not used; in which 6 (a) represents the deformation diagram of the floor of the box girder with grid webs when the prestressing elements are used; 6 (b) shows a deformation diagram of the floor of the box girder with grid cores when the prestressing elements are not used;
    Drawing 7 represents the diagrams of the box girder with grid cores of the embodiment of the present invention and the corrugated steel girder box beams current under the effect of wind load; in which Drawing 7 (a) shows the diagram of the box girder of the present invention under the effect of wind load; Drawing 7 (b) shows the diagram of the current corrugated steel box girders under the wind load effect;
    Drawing 8 shows the heat exchange diagrams of the internal and external parts of the box girder with grid cores of the embodiment of the present invention and current corrugated steel box girder beams; in which Drawing 8 (a) represents the diagram of the heat exchanges of the internal and external parts of the box girder of the present invention; Drawing 8 (b) represents the heat exchange diagram of the internal and external parts of the corrugated steel box girders
    BE2018 / 5100 current;
    Markers on the drawings:
    1. Apron; 2. Floor; 3. First soul; 3-1. First support bar; 3-2. First upper beam; 3-3. First lower beam; 4. Second soul; 4-1. Second spacers; 4-2. Second upper beam; 4-3. Second lower beam; 5. Beam with transverse prestressing; 5-1. Prestressed beam; 6. Pressure bar; 7. Prestressing elements.
    Mode of realization
    In order to clarify the aims, the technical plan and the advantages of the present invention, a clear description of the technical plan of the present invention combined with the accompanying drawings is given below, of course the embodiment described constitutes only part of the modes of the present invention and not all of the embodiments. All other embodiments made by those skilled in the art and based on the embodiment of the present invention, provided that they do not provide creative work, are covered by the scope of protection of the present invention.
    In the description of the present invention, in addition to when otherwise specified, the orientations or position reports designated by the expressions “upper” and “lower” are based on the orientations and position reports represented in the accompanying drawings, they are only intended to simplify the description of the present invention, and do not indicate or suggest a necessary specific orientation of the device or element described, nor a specifically oriented structure or operation, this is why they cannot be understood as limitations to the present invention.
    It should be noted that, in addition to when specified and determined otherwise, the term “connected” is to be understood in the broad sense, for example, it can be a fixed connection, but also a detachable connection, or even a one-piece connection; it can be a direct connection or an indirect connection via an intermediate vector. A person skilled in the art can understand the concrete meaning of the aforementioned expressions in situation in the present invention.
    With reference to Drawings 1 to 4, the present invention provides a box beam with
    BE2018 / 5100 of grid cores, said box girder comprising an apron 1, a floor 2, a first core 3 and a second core 4 arranged in opposite directions, said first core 3 comprising a first upper beam 3-2 embedded in said deck 1, a first lower beam 3-3 embedded in said floor 2 and a plurality of first struts 3-1 arranged spaced between said first upper beam 3-2 and said first lower beam 3-3; the two ends of said first spacers 3-1 being respectively connected to said first upper beam 3-2 and to said first lower beam 3-3; said second core 4 comprises a second upper beam 4-2 embedded in said deck 1, a second lower beam 4-3 embedded in said floor 2 and second struts 4-1 corresponding one to one to said first struts 3-1, both ends of said second spacers 4-1 being respectively connected to said second upper beam 4-2 and to said second lower beam 4-3.
    During concrete work, first of all the first core 3 and the second core 4 can be pre-assembled in the factory: all the first spacers 3-1 are welded spaced apart on the first upper beam 3-2 and the first lower beam 3-3, simultaneously all the second spacers 4-1 are welded in a spaced manner on the second upper beam 4-2 and the second lower beam 4-3; once the first core 3 and the second core 4 are then transported to the site, the floor is produced: the floor formwork is assembled, the first lower beam 3-3 and the second lower beam 4-3 are embedded and the concrete is poured to form the floor 2; finally, once the floor 2 has reached the determined solidity, the deck 1 is produced: the shuttering of the deck is mounted using the first core 3 or the second core 4 as formwork support, the first upper beam 3-2 and the second upper beam 4-2 are embedded and the concrete is poured to form the deck 1. We find that not only the structure of the present invention is simple, that the work is simple and practical and the pouring of concrete fully distributed, but during construction, the use of the first core 3 or the second core 4 as a formwork support makes it possible to significantly reduce the overall cost of the construction of the box girder.
    In addition, with reference to Drawings 7 and 8 we can see that there are gaps between two first spacers 3-1 and two second adjacent spacers 4-1, this design not only makes it possible to lighten the weight of the beam to box, but to reduce the wind area of the first core 3 and the second core 4, so that the wind can
    BE2018 / 5100 cross the box girder directly horizontally, which very significantly reduces the impact of the wind load on it; simultaneously, due to the good convection of air between the internal and external parts of the box beam, there is no temperature difference between the inside and the outside of the box beam, this which significantly reduces thermal stress and increases the service life of the box girder.
    Preferably, said first upper beam 3-2, first lower beam 33, second upper beam 4-2 and second lower beam 4-3 are all I-sections. Thus when the deck 1 and the floor 2 are cast, the concave parts on both sides of the I can be filled with concrete, that is to say that the I-sections can be completely encased in concrete, so that the problem of poorly distributed casting at the junctions of the first core 3 and the second core 4 to deck 1 and floor 2 can be better avoided.
    Preferably, said first spacers 3-1 and said second spacers 41 are all T-shaped steel plates, in order to further increase the load capacity of the first core 3 and the second core 4 in the event of buckling.
    In addition, in order to increase the anti-cracking performance of the floor 2, the box beam further comprises prestressing elements 7, a transverse prestressed beam 5 and a pressure bar 6, said pressure bar 6 is arranged at- above the middle part of said transverse prestressed beam 5, said transverse prestressed beam 5 comprises a plurality of prestressed beams 5-1 arranged above said floor 2, the two ends of each prestressed beam 5-1 are connected respectively said first struts 3-1 and said second corresponding struts 4-1, said pressure bar 6 and said prestressing beams 5-1 being orthogonal, said prestressing elements 7 serving to arrange said pressure bar 6 by pressing on said beams prestressed 5-1.
    The two ends of each prestressed beam 5-1 being respectively connected to the first spacers 3-1 and to the corresponding second struts 4-1, that is to say that the two ends of each prestressed beam 5-1 being respectively connected to the first spacers 3-1 and to the adjoining second spacers 4-1, when prestressing elements 7 arrange the pressure bar 6 by pressing on the prestressed beams 5-1, a slight deformation of curvature occurs with the prestressed beams 5-1
    BE2018 / 5100 generating a horizontal preload, at this time the preload beams 5-1 are in tension state, that is to say that the pressure bar 6 exerts a downward pressure on each of the preload beams 5 -1 which, via the prestressed beams 5-1 and the first spacers 3-1 and the second spacers 4-1 which are connected to it, is transmitted to the floor 2, so that the floor 2 undergoes horizontal prestressing, thus effectively preventing cracking of the floor 2.
    In addition, said pressure bar 6 is made of steel and has a double hollow.
    Preferably, the quantity of said prestressing elements 7 is a plurality, a plurality of said prestressing elements 7 are arranged lengthwise along the pressure bar 6, in order to guarantee that the pressure exerted on the floor 2 is homogeneous in each place.
    Preferably, said prestressing elements 7 comprise threaded steel bars and nuts, one end of said threaded steel bars is embedded in said floor 2, the other end passes through said pressure bar 6 and is connected to said nuts. The advantages of such a design are: on the one hand, the structure is simple, practical handling, by screwing the nuts, the pressure bar 6 can be arranged by pressing on the prestressed beams 5-1, not only that avoids the use of a very heavy and bulky upper part to arrange by pressure the pressure bar 6, but it is not necessary to specially design working platforms on both sides of the floor 2, which simplifies considerably the work process and reduce costs; on the other hand, by adjusting the length of the threaded steel bars by screwing the nuts on it it is possible to modify the horizontal tension exerted on the floor 2; in addition, with reference to Drawing 6 we can see that parallel to the pressure exerted by the prestressing elements 7 on the pressure bar 6, the pressure bar 6 exerts a counter-force, that is to say a force d 'upward stretching on the threaded steel bars, i.e. an upward stretching force applied to the floor 2, the combined action of this force, the weight of the floor 2 itself and the horizontal prestressing, ensures that the deformation of the floor 2 remains within the determined range. It should be noted that the prestressing elements 7 may not fall solely from an assembly structure of threaded steel bars and nuts, it may also be bolts, threaded holes may be arranged on the floor 2 at the time of the work, so that one end of the bolts is screwed into the threaded holes after passing through the compressed bar 6, it suffices just to make sure that the pressure bar
    BE2018 / 5100 6 is arranged by pressure on the prestressed beams 5-1.
    With reference to Drawing 5, said prestressed beams 5-1 pass through angles and are connected to said first spacers 3-1 and to said second spacers 4-1.
    Finally, it should be noted that the above embodiment is intended to illustrate the technical plan of the present invention and is not intended to limit it; although a detailed description of the present invention has been given using the embodiment, those skilled in the art should know that modifications to the technical plans of the above-mentioned embodiment are always possible, or that equivalent substitutions of some partial techniques can be performed; these modifications or substitutions do not substantially distance the corresponding technical plans from the spirit and the scope of the technical plan from the embodiment of the present invention.
    权利要求:
    Claims (9)
    [1]
    1. A box beam with grid souls, characterized in that, it comprises an apron, a floor, a first core and a second core arranged in opposite directions, said first core comprising a first upper beam embedded in said deck , a first lower beam embedded in said floor and a plurality of first struts spaced apart between said first upper beam and said first lower beam; the two ends of said first spacers being respectively connected to said first upper beam and to said first lower beam; said second core comprises a second upper beam embedded in said deck, a second lower beam embedded in said floor and second struts corresponding one to one to said first struts, the two ends of said second struts being respectively connected to said second upper beam and said second lower beam.
    [2]
    2. A box beam with grid souls according to claim 1 characterized in that, said first upper beam, first lower beam, second upper beam and second lower beam are all I-sections.
    [3]
    3. A box girder with grid webs according to claim 1 characterized in that, said first spacers and said second spacers are all T-shaped steel plates.
    [4]
    4. A box girder provided with grid cores according to any one of claims 1 to 3 characterized in that, it further comprises prestressing elements, a transverse prestressed beam and a pressure bar, said bar pressure is arranged above the middle part of said transverse prestressed beam, said transverse prestressed beam comprises a plurality of prestressed beams arranged above said floor, the two ends of each prestressed beam are connected respectively to said first spacers and to said second corresponding spacers, said pressure bar and said prestressed beams being orthogonal, said prestressing elements serving to arrange said pressure bar by pressing on said prestressed beams.
    [5]
    5. A box girder with grid webs according to claim 4 characterized in that, said pressure bar is made of steel and double hollow.
    [6]
    6. A box girder with grid webs according to claim 4 characterized in
    BE2018 / 5100 that, the quantity of said prestressing elements is a plurality, a plurality of said prestressing elements are arranged lengthwise along said pressure bar.
    [7]
    7. A box girder with grid webs according to claim 6 characterized in
    5 that, said prestressing elements include threaded steel bars and nuts, one end of said threaded steel bars is embedded in said floor, the other end passes through said pressure bar and is connected to said nuts.
    [8]
    8. A box beam with grid souls according to claim 4 characterized in that, said prestressed beams pass through angles and are connected to said
    [9]
    10 first spacers and said second spacers.
    类似技术:
    公开号 | 公开日 | 专利标题
    BE1025239B1|2018-12-18|A box beam with grid cores
    FR2814480A1|2002-03-29|SCRAP CAGE FOR REINFORCED CONCRETE ELEMENT
    EP2573268A1|2013-03-27|Modular metal bridge and method for producing same
    EP3559364B1|2020-10-14|Permanent concrete formwork and method for manufacturing metal-concrete composite structure using such formwork
    EP0152367A1|1985-08-21|Device for forming joints in industrial-type floors, especially concrete floors
    FR2564871A1|1985-11-29|Girder with prestressed concrete booms and a steel web
    EP1135565B1|2003-09-03|Wooden trussed structural systems, such as frameworks, bridges, floors
    EP1418283A1|2004-05-12|Modular load carrying structure
    WO2005012665A1|2005-02-10|Beam attachment system
    FR3048009A3|2017-08-25|MOLD SYSTEM FOR THE FORMATION OF MONOLITHIC CONCRETE ELEMENTS
    EP0369894B1|1993-05-05|Weighing bridge with a modular structure
    FR2697857A1|1994-05-13|Precast concrete T beam for composite floor construction - has three main reinforcing bars two in flange fixed to bottom of zigzag bent stirrups third fixed to top as starter bars for finishing concrete
    BE456222A|
    FR2801620A1|2001-06-01|Prefabricated concrete staircase has precast concrete treads with lugs connected by cast in metal beam
    OA18497A|2018-12-04|Construction type prefabricated posts and beams.
    EP0260197A1|1988-03-16|Reinforced concrete bridge with integrated shuttering
    WO2007113402A1|2007-10-11|Building of large-span bearing metal structures
    FR3018298B1|2019-09-27|REINFORCING BARRET FOR STRUCTURE ELEMENT
    FR3087462A1|2020-04-24|PREFABRICATED STAIRCASE WITH IMPROVED MARKET PLATES
    BE881938A|1980-08-27|EMERGENCY BRIDGE WITH STANDARD ELEMENTS AND MOUNTING METHOD THEREOF
    EP3310973A1|2018-04-25|Construction of the prefabricated column and beam type
    FR2736372A1|1997-01-10|BEAM STRUCTURE AND ARTICLES USING THE SAME
    EP0294266A2|1988-12-07|Support structure for the construction of multi-purpose halls, such as gymnasiums, covered tennis courts, workshops, factories...
    FR2897086A1|2007-08-10|Metal shoe for assembling components of timber frames, e.g. of roof trusses, has rectangular-section troughs to receive sections of joined components
    FR2892735A1|2007-05-04|REINFORCED LATTICE STRUCTURE AND REINFORCEMENT METHOD
    同族专利:
    公开号 | 公开日
    BE1025239A1|2018-12-12|
    CN107338719A|2017-11-10|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    WO2010021428A1|2008-08-18|2010-02-25|Woo Kyoung Construction Co., Ltd.|Opening steel composite girder and method for manufacturing the same|
    CN103741584A|2013-12-31|2014-04-23|清华大学|Lower flange anti-pulling composite box girder with corrugated steel webs and construction method|
    CN205474782U|2015-12-11|2016-08-17|河南省交通规划设计研究院股份有限公司|External prestress wave form steel web T roof beam|
    CN206090273U|2016-09-09|2017-04-12|湖南省交通规划勘察设计院|Prefabricated UHPC of assembling of festival section wave form steel web combination box beam and cable -stay bridge|
    CN106638271A|2016-10-26|2017-05-10|招商局重庆交通科研设计院有限公司|Corrugated steel web-fish bone beam composite structure bridge|
    CN206570671U|2017-03-09|2017-10-20|河南省交通规划设计研究院股份有限公司|Based on the prestressed assembled corrugated steel web plate composite box girder of mixing|
    JP2000104219A|1998-09-28|2000-04-11|Nkk Corp|Erection of combined truss bridge|
    JP3885584B2|2001-12-28|2007-02-21|鹿島建設株式会社|Construction method of composite truss bridge|
    CN100507151C|2007-11-23|2009-07-01|清华大学|Double-deck bridge floor combined trussed girder bridge|
    CN101936054B|2010-08-19|2012-07-25|李勇|Steel truss web combined PC beam and construction method thereof|
    CN102704386B|2012-06-13|2015-06-17|交通运输部公路科学研究所|Prefabricated component assembly type segment assembling corrugated steel web RPC combination box girder and method therefor|
    CN206157556U|2016-11-02|2017-05-10|江西省交通设计研究院有限责任公司|Steel pipe concrete web member combination box beam|
    法律状态:
    2019-01-16| FG| Patent granted|Effective date: 20181218 |
    优先权:
    申请号 | 申请日 | 专利标题
    CN201710496332.7|2017-06-26|
    CN201710496332.7A|CN107338719A|2017-06-26|2017-06-26|Box beam with fence type web|
    [返回顶部]